Baby boomers paid of mortgages and use the savings to start buying houses to add to their retirement portfolio More and more dual income housing, people can af

Baby boomers paid of mortgages and use the savings to start buying houses to add to their retirement portfolio More and more dual income housing, people can afford to spend more on a house so prices go up, then families have to have two incomes to have the same house that the previous generation had on one income More households -- parents get divorce, now it's 2 houses needed for 2 parents and 2.4 kids